CIS — Croatia e-invoicing

Invoicerr does not support Croatia

No Croatia data file exists anywhere in this repository — no country policy, no identifiers, no tax system, no transmission channel. Nothing on this page is implemented. It is here so that someone who wants Croatia support knows what adding it would involve. The countries Invoicerr does cover are listed in the country directory.

Croatia introduced mandatory e-invoicing under the Fiscalization 2.0 reform, passed in mid-2025 with one of the shortest rollout windows in Europe. Invoices are validated by the CIS (Central Information System), Croatia's clearance platform, accessible through the e-Račun portal, under the Tax Administration (Porezna uprava). The mandate covers B2B, B2C, and B2G transactions.

What supporting Croatia would involve

System	CIS (Central Information System) — Croatia's e-invoicing clearance platform, accessible through the e-Račun portal
Authority	Tax Administration (Porezna uprava)
Format	A national XML schema (e-Račun format). No provider in backend/src/modules/documents/formats/ builds it today.
Transmission	The CIS platform, reached through the e-Račun portal. No transport in backend/src/modules/documents/transports/ talks to it today.

Inherited, unverified

Carried over from an earlier research pass in this repository's own history, and never checked against a primary source. Leads, not facts — confirm every line before writing it into a data file.

• Clearance model — every invoice must be validated by CIS before it reaches the buyer.
• The mandate reached public bodies and large enterprises from January 2026, with all other businesses following in January 2027.
• Each invoice receives a QR code for validation.

Which catalogues a contributor would add

Adding a country is data, not code. Adding a country is the procedure and the contract each file has to satisfy; this is only the shopping list for Croatia.

• country-policy/data/hr.json — which document actions Croatia allows. Start here: without this file every action is refused with a 403, naming the country.
• country-identifiers/data/hr.json — which national identifier a party must carry.
• tax/tax-systems/data/hr.json and vat-rates/data/hr.json — the tax kind, and the rate ladder offered on an invoice line.
• correction-routes/data/hr.json — all eleven canonical correction routes, unverified where unresearched, never omitted.
• b2g-routing/data/hr.json — the channel and format a Croatian public buyer requires.
• transports/channel-policy/data/hr.json — whether a channel is legally required of a seller established in Croatia, and from what date.
• archive/retention/data/hr.json — how long an archived document is kept, and what the duration is counted from.

Add mentions/, content-requirements/, country-fields/, reporting/ and domestic-reverse-charge/ only where the law actually gives them content.

Data alone will not finish the job here: the CIS platform is a transmission channel this repository does not implement, and the e-Račun XML schema has no format provider. Both are code, not a JSON file — see When a country needs more than a file.

Want Croatia supported?

Check the open compliance issues first. If there is no issue for Croatia, open one and name which of the files above you need — a request that names one mechanism is far more actionable than "please add Croatia".